221051230 has 16 divisors (see below), whose sum is σ = 398599344. Its totient is φ = 88263360.

The previous prime is 221051219. The next prime is 221051267. The reversal of 221051230 is 32150122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13647 + ... + 25066.

It is an arithmetic number, because the mean of its divisors is an integer number (24912459).

Almost surely, 2^221051230 is an apocalyptic number.

221051230 is a deficient number, since it is larger than the sum of its proper divisors (177548114).

221051230 is a wasteful number, since it uses less digits than its factorization.

221051230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39291.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 221051230 is about 14867.7916988368. The cubic root of 221051230 is about 604.6410729889.

The spelling of 221051230 in words is "two hundred twenty-one million, fifty-one thousand, two hundred thirty".